Motor Temperature Monitoring with Senbrino: GO-RP2350-CB04T04 Application

We built this motor temperature monitor with Senbrino on a GO-RP2350-CB04T04 board. It measures four temperature channels and controls relay outputs according to configured conditions. Temperature readings and alarm status are available over Modbus.

Motor temperature monitoring screen running on GO-RP2350-CB04T04

Project overview

Item	Details
Customer	Confidential
Product	Senbrino
Hardware	GO-RP2350-CB04T04
Functions	Four temperature channels, relay shutdown and alarms, Modbus RTU/TCP, touch LCD

Hardware: GO-RP2350-CB04T04

GO-RP2350-CB04T04 is an RP2350 control board. This project uses the following configuration.

Component	Purpose
Four temperature inputs	Measure motor temperatures with NTC and PT1000 sensors
Two relay outputs	Overtemperature shutdown and alarms
RS485 and Ethernet	Modbus communication with the host equipment
Touch LCD	Local monitoring and settings

Device functions

The device continuously measures four motor temperature channels and controls relay outputs according to the configured temperature conditions. It makes temperature readings and alarm status available over Modbus RTU/TCP.

The touch LCD shows current temperatures and a trend graph. Operators can change temperature thresholds on the administrator screen, and the device retains these settings after a power cycle.

Four temperature channels and a trend graph on the touch LCD

The screen shows readings and threshold conditions for T1 through T4, with the trend graph on the right. T4 has no sensor connected and displays no reading.

Configuration in Senbrino

We used ladder logic for relay control and C++ user code for temperature conversion and the display.

Function	Implementation
Relay output control	Ladder logic
Communication with host equipment	Senbrino communication settings
Temperature conversion and settings storage	C++ user code
LCD and touch interface	C++ user code

Relay control in ladder logic

The ladder program combines channel selection and temperature conditions to control OUT1 and OUT2.

Relay output rungs in the Senbrino ladder editor

OUT1 and OUT2 relay control. Each output has parallel branches for the individual channel conditions.

Host integration

Connection	Protocol
RS485	Modbus RTU
Ethernet	Modbus TCP

The host equipment can read temperature values and alarm status.

Contact

Email: [email protected]
Instagram: https://www.instagram.com/going.sen/
Website: https://intosen.com/en/consult/